T420 Wifi Led light not turned on

I have a lenovo t420, and I notice that my WiFI led light on the bottom of the LCD panel is not lighted when i have my wireless on... My bluetooth led light works fine. I tried to switch both my Lenovo Access Connection and the switch button but nothing works? any idea ?

Re: T420 Wifi Led light not turned on

It's me again. Yesterday i've noticed, that if the lid's opened less than 90 degree, all the LEDs are working. I guess this could be a wiring problem, or a broken PCB. Could you please give me some info how it's made? Are the LEDs on a PCB? Do they have a connector?

The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.

The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog